Fab Four effective field theory treatment

被引：9

作者：

Latosh, B. ^{[1
,2
]}

机构：

[1] Univ Sussex, Dept Phys & Astron, Brighton BN1 9QH, E Sussex, England

[2] Dubna State Univ, Univ Skaya Str 19, Dubna 141982, Russia

来源：

EUROPEAN PHYSICAL JOURNAL C | 2018年 / 78卷 / 12期

基金：

俄罗斯基础研究基金会;

关键词：

GRAVITY;

D O I：

10.1140/epjc/s10052-018-6470-0

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The article addresses the John interaction from Fab Four class of Horndeski models from the effective field theory point of view. Models with this interaction are heavily constrained by gravitational wave speed observations, so it is important to understand, if these constraints hold in the effective field theory framework. We show that John interaction induces new terms quadratic in curvature at the level of the effective (classical) action. These new terms generate additional low energy scalar and spin-2 gravitational degrees of freedom. Some of them have a non-vanishing decay width and some are ghosts. Discussion of these features is given.

引用

页数：5

共 34 条

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